Preheat the Oven: Set your oven to 350°F (175°C) and line a baking sheet with parchment paper for easy cleanup.
Prepare the Garlic Butter: In a small bowl, combine melted butter, chopped parsley, minced garlic, grated Parmesan, salt, black pepper, and dried oregano. Whisk until well blended and fragrant. This will be your flavorful topping and glaze.
Prepare the Rolls: Using a sharp knife, cut two slits in each Hawaiian roll — about two-thirds of the way down, without cutting all the way through. This creates little pockets for your filling.
Stuff the Rolls: Fill each slit generously with pepperoni slices and shredded mozzarella cheese. Press gently so the fillings settle inside without tearing the roll.
Brush with Garlic Butter: Use a pastry brush to spread the garlic butter mixture over the tops and bottoms of the rolls. Make sure each roll is evenly coated for that perfect golden, flavorful crust.
Bake: Arrange the filled rolls on your prepared baking sheet and bake in the preheated oven for 10 minutes, or until the rolls are golden brown and the cheese is melted and gooey.
Serve: Remove from the oven and let cool slightly. Serve warm with a side of marinara sauce for dipping — the perfect finishing touch!
